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root/jsr166/jsr166/src/test/tck/LinkedTransferQueueTest.java

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.8 by jsr166, Tue Aug 4 20:35:11 2009 UTC vs.
Revision 1.74 by jsr166, Sat May 13 22:49:01 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	<	import java.util.ConcurrentModificationException;
12	>	import java.util.Collection;
13		import java.util.Iterator;
14	+	import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
25
26	+	@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new LinkedTransferQueue();
31	+	}
32	+	}
33
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run(suite());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
39	>	class Implementation implements CollectionImplementation {
40	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	>	public Object makeElement(int i) { return i; }
43	>	public boolean isConcurrent() { return true; }
44	>	public boolean permitsNulls() { return false; }
45	>	}
46	>	return newTestSuite(LinkedTransferQueueTest.class,
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 48 | Line 65 | public class LinkedTransferQueueTest ext
65		try {
66		new LinkedTransferQueue(null);
67		shouldThrow();
68	<	} catch (NullPointerException success) {
52	<	}
68	>	} catch (NullPointerException success) {}
69		}
70
71		/**
#	Line 57 | Line 73 | public class LinkedTransferQueueTest ext
73		* NullPointerException
74		*/
75		public void testConstructor3() {
76	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
77		try {
78	<	Integer[] ints = new Integer[SIZE];
62	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80	<	} catch (NullPointerException success) {
65	<	}
80	>	} catch (NullPointerException success) {}
81		}
82
83		/**
#	Line 70 | Line 85 | public class LinkedTransferQueueTest ext
85		* throws NullPointerException
86		*/
87		public void testConstructor4() {
88	+	Integer[] ints = new Integer[SIZE];
89	+	for (int i = 0; i < SIZE - 1; ++i)
90	+	ints[i] = i;
91	+	Collection<Integer> elements = Arrays.asList(ints);
92		try {
93	<	Integer[] ints = new Integer[SIZE];
75	<	for (int i = 0; i < SIZE - 1; ++i) {
76	<	ints[i] = i;
77	<	}
78	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95	<	} catch (NullPointerException success) {
81	<	}
95	>	} catch (NullPointerException success) {}
96		}
97
98		/**
99		* Queue contains all elements of the collection it is initialized by
100		*/
101		public void testConstructor5() {
102	<	try {
103	<	Integer[] ints = new Integer[SIZE];
104	<	for (int i = 0; i < SIZE; ++i) {
105	<	ints[i] = i;
106	<	}
107	<	LinkedTransferQueue q
108	<	= new LinkedTransferQueue(Arrays.asList(ints));
109	<	for (int i = 0; i < SIZE; ++i) {
110	<	assertEquals(ints[i], q.poll());
111	<	}
112	<	} finally {
102	>	Integer[] ints = new Integer[SIZE];
103	>	for (int i = 0; i < SIZE; ++i) {
104	>	ints[i] = i;
105	>	}
106	>	List intList = Arrays.asList(ints);
107	>	LinkedTransferQueue q
108	>	= new LinkedTransferQueue(intList);
109	>	assertEquals(q.size(), intList.size());
110	>	assertEquals(q.toString(), intList.toString());
111	>	assertTrue(Arrays.equals(q.toArray(),
112	>	intList.toArray()));
113	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
114	>	intList.toArray(new Object[0])));
115	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
116	>	intList.toArray(new Object[SIZE])));
117	>	for (int i = 0; i < SIZE; ++i) {
118	>	assertEquals(ints[i], q.poll());
119		}
120		}
121
122		/**
123	<	* Remaining capacity never decrease nor increase on add or remove
123	>	* remainingCapacity() always returns Integer.MAX_VALUE
124		*/
125		public void testRemainingCapacity() {
126	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
126	>	BlockingQueue q = populatedQueue(SIZE);
127		for (int i = 0; i < SIZE; ++i) {
128		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
129		assertEquals(SIZE - i, q.size());
130	<	q.remove();
130	>	assertEquals(i, q.remove());
131		}
132		for (int i = 0; i < SIZE; ++i) {
133		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
134		assertEquals(i, q.size());
135	<	q.add(i);
116	<	}
117	<	}
118	<
119	<	/**
120	<	* offer(null) throws NullPointerException
121	<	*/
122	<	public void testOfferNull() {
123	<	try {
124	<	LinkedTransferQueue q = new LinkedTransferQueue();
125	<	q.offer(null);
126	<	shouldThrow();
127	<	} catch (NullPointerException success) {
128	<	}
129	<	}
130	<
131	<	/**
132	<	* add(null) throws NullPointerException
133	<	*/
134	<	public void testAddNull() {
135	<	try {
136	<	LinkedTransferQueue q = new LinkedTransferQueue();
137	<	q.add(null);
138	<	shouldThrow();
139	<	} catch (NullPointerException success) {
140	<	}
141	<	}
142	<
143	<	/**
144	<	* addAll(null) throws NullPointerException
145	<	*/
146	<	public void testAddAll1() {
147	<	try {
148	<	LinkedTransferQueue q = new LinkedTransferQueue();
149	<	q.addAll(null);
150	<	shouldThrow();
151	<	} catch (NullPointerException success) {
135	>	assertTrue(q.add(i));
136		}
137		}
138
#	Line 156 | Line 140 | public class LinkedTransferQueueTest ext
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
160	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147	<	} catch (IllegalArgumentException success) {
164	<	}
165	<	}
166	<
167	<	/**
168	<	* addAll of a collection with null elements throws NullPointerException
169	<	*/
170	<	public void testAddAll2() {
171	<	try {
172	<	LinkedTransferQueue q = new LinkedTransferQueue();
173	<	Integer[] ints = new Integer[SIZE];
174	<	q.addAll(Arrays.asList(ints));
175	<	shouldThrow();
176	<	} catch (NullPointerException success) {
177	<	}
147	>	} catch (IllegalArgumentException success) {}
148		}
149
150		/**
#	Line 182 | Line 152 | public class LinkedTransferQueueTest ext
152		* NullPointerException after possibly adding some elements
153		*/
154		public void testAddAll3() {
155	+	LinkedTransferQueue q = new LinkedTransferQueue();
156	+	Integer[] ints = new Integer[SIZE];
157	+	for (int i = 0; i < SIZE - 1; ++i)
158	+	ints[i] = i;
159		try {
186	–	LinkedTransferQueue q = new LinkedTransferQueue();
187	–	Integer[] ints = new Integer[SIZE];
188	–	for (int i = 0; i < SIZE - 1; ++i) {
189	–	ints[i] = i;
190	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162	<	} catch (NullPointerException success) {
194	<	}
162	>	} catch (NullPointerException success) {}
163		}
164
165		/**
#	Line 212 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
215	–	* put(null) throws NullPointerException
216	–	*/
217	–	public void testPutNull() throws InterruptedException {
218	–	try {
219	–	LinkedTransferQueue q = new LinkedTransferQueue();
220	–	q.put(null);
221	–	shouldThrow();
222	–	} catch (NullPointerException success) {}
223	–	}
224	–
225	–	/**
183		* all elements successfully put are contained
184		*/
185		public void testPut() {
186	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
187		for (int i = 0; i < SIZE; ++i) {
188	+	assertEquals(i, q.size());
189		q.put(i);
190		assertTrue(q.contains(i));
191		}
234	–	assertEquals(q.size(), SIZE);
192		}
193
194		/**
#	Line 245 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* take blocks interruptibly when empty
249	<	*/
250	<	public void testTakeFromEmpty() throws InterruptedException {
251	<	final LinkedTransferQueue q = new LinkedTransferQueue();
252	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
253	<	void realRun() throws InterruptedException {
254	<	q.take();
255	<	}});
256	<	t.start();
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	t.interrupt();
259	<	t.join();
260	<	}
261	<
262	<	/**
263	<	* Take removes existing elements until empty, then blocks interruptibly
205	>	* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
209	<	void realRun() throws InterruptedException {
210	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
211	<	for (int i = 0; i < SIZE; ++i) {
212	<	threadAssertEquals(i, (int) q.take());
213	<	}
214	<	q.take();
208	>	final BlockingQueue q = populatedQueue(SIZE);
209	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
210	>	Thread t = newStartedThread(new CheckedRunnable() {
211	>	public void realRun() throws InterruptedException {
212	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
213	>
214	>	Thread.currentThread().interrupt();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>
221	>	pleaseInterrupt.countDown();
222	>	try {
223	>	q.take();
224	>	shouldThrow();
225	>	} catch (InterruptedException success) {}
226	>	assertFalse(Thread.interrupted());
227		}});
228	<	t.start();
229	<	Thread.sleep(SHORT_DELAY_MS);
228	>
229	>	await(pleaseInterrupt);
230	>	assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	t.join();
232	>	awaitTermination(t);
233		}
234
235		/**
236		* poll succeeds unless empty
237		*/
238	<	public void testPoll() {
238	>	public void testPoll() throws InterruptedException {
239		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
240		for (int i = 0; i < SIZE; ++i) {
241		assertEquals(i, (int) q.poll());
242		}
243		assertNull(q.poll());
244	+	checkEmpty(q);
245		}
246
247		/**
248	<	* timed pool with zero timeout succeeds when non-empty, else times out
248	>	* timed poll with zero timeout succeeds when non-empty, else times out
249		*/
250		public void testTimedPoll0() throws InterruptedException {
251		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 297 | Line 253 | public class LinkedTransferQueueTest ext
253		assertEquals(i, (int) q.poll(0, MILLISECONDS));
254		}
255		assertNull(q.poll(0, MILLISECONDS));
256	+	checkEmpty(q);
257		}
258
259		/**
260	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
260	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
266	<	}
267	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268	>
269	>	startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272	>	checkEmpty(q);
273		}
274
275		/**
#	Line 315 | Line 277 | public class LinkedTransferQueueTest ext
277		* returning timeout status
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
281	<	void realRun() throws InterruptedException {
282	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
283	<	for (int i = 0; i < SIZE; ++i) {
284	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
285	<	MILLISECONDS));
286	<	}
287	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
280	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
282	>	Thread t = newStartedThread(new CheckedRunnable() {
283	>	public void realRun() throws InterruptedException {
284	>	long startTime = System.nanoTime();
285	>	for (int i = 0; i < SIZE; ++i)
286	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	>	aboutToWait.countDown();
288	>	try {
289	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
290	>	shouldThrow();
291	>	} catch (InterruptedException success) {}
292	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
293		}});
294	<	t.start();
295	<	Thread.sleep(SHORT_DELAY_MS);
294	>
295	>	await(aboutToWait);
296	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
297		t.interrupt();
298	<	t.join();
298	>	awaitTermination(t);
299	>	checkEmpty(q);
300		}
301
302		/**
303	<	* timed poll before a delayed offer fails; after offer succeeds;
304	<	* on interruption throws
303	>	* timed poll after thread interrupted throws InterruptedException
304	>	* instead of returning timeout status
305		*/
306	<	public void testTimedPollWithOffer() throws InterruptedException {
307	<	final LinkedTransferQueue q = new LinkedTransferQueue();
308	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
309	<	void realRun() throws InterruptedException {
310	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
311	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
312	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
306	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
307	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
308	>	Thread t = newStartedThread(new CheckedRunnable() {
309	>	public void realRun() throws InterruptedException {
310	>	long startTime = System.nanoTime();
311	>	Thread.currentThread().interrupt();
312	>	for (int i = 0; i < SIZE; ++i)
313	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
314	>	try {
315	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
316	>	shouldThrow();
317	>	} catch (InterruptedException success) {}
318	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
319		}});
320	<	t.start();
321	<	Thread.sleep(SMALL_DELAY_MS);
322	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
348	<	t.interrupt();
349	<	t.join();
320	>
321	>	awaitTermination(t);
322	>	checkEmpty(q);
323		}
324
325		/**
326		* peek returns next element, or null if empty
327		*/
328	<	public void testPeek() {
328	>	public void testPeek() throws InterruptedException {
329		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
330		for (int i = 0; i < SIZE; ++i) {
331		assertEquals(i, (int) q.peek());
#	Line 361 | Line 334 | public class LinkedTransferQueueTest ext
334		i != (int) q.peek());
335		}
336		assertNull(q.peek());
337	+	checkEmpty(q);
338		}
339
340		/**
341		* element returns next element, or throws NoSuchElementException if empty
342		*/
343	<	public void testElement() {
343	>	public void testElement() throws InterruptedException {
344		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
345		for (int i = 0; i < SIZE; ++i) {
346		assertEquals(i, (int) q.element());
#	Line 375 | Line 349 | public class LinkedTransferQueueTest ext
349		try {
350		q.element();
351		shouldThrow();
352	<	} catch (NoSuchElementException success) {
353	<	}
352	>	} catch (NoSuchElementException success) {}
353	>	checkEmpty(q);
354		}
355
356		/**
357		* remove removes next element, or throws NoSuchElementException if empty
358		*/
359	<	public void testRemove() {
359	>	public void testRemove() throws InterruptedException {
360		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
361		for (int i = 0; i < SIZE; ++i) {
362		assertEquals(i, (int) q.remove());
#	Line 390 | Line 364 | public class LinkedTransferQueueTest ext
364		try {
365		q.remove();
366		shouldThrow();
367	<	} catch (NoSuchElementException success) {
368	<	}
395	<	}
396	<
397	<	/**
398	<	* remove(x) removes x and returns true if present
399	<	*/
400	<	public void testRemoveElement() {
401	<	LinkedTransferQueue q = populatedQueue(SIZE);
402	<	for (int i = 1; i < SIZE; i += 2) {
403	<	assertTrue(q.remove(i));
404	<	}
405	<	for (int i = 0; i < SIZE; i += 2) {
406	<	assertTrue(q.remove(i));
407	<	assertFalse(q.remove(i + 1));
408	<	}
409	<	assertTrue(q.isEmpty());
367	>	} catch (NoSuchElementException success) {}
368	>	checkEmpty(q);
369		}
370
371		/**
#	Line 419 | Line 378 | public class LinkedTransferQueueTest ext
378		assertTrue(q.remove(one));
379		assertTrue(q.remove(two));
380		assertTrue(q.add(three));
381	<	assertTrue(q.take() != null);
381	>	assertSame(q.take(), three);
382		}
383
384		/**
#	Line 437 | Line 396 | public class LinkedTransferQueueTest ext
396		/**
397		* clear removes all elements
398		*/
399	<	public void testClear() {
399	>	public void testClear() throws InterruptedException {
400		LinkedTransferQueue q = populatedQueue(SIZE);
401		q.clear();
402	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
402	>	checkEmpty(q);
403		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
404		q.add(one);
405		assertFalse(q.isEmpty());
406	+	assertEquals(1, q.size());
407		assertTrue(q.contains(one));
408		q.clear();
409	<	assertTrue(q.isEmpty());
409	>	checkEmpty(q);
410		}
411
412		/**
#	Line 455 | Line 414 | public class LinkedTransferQueueTest ext
414		*/
415		public void testContainsAll() {
416		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
417	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
417	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
418		for (int i = 0; i < SIZE; ++i) {
419		assertTrue(q.containsAll(p));
420		assertFalse(p.containsAll(q));
#	Line 501 | Line 460 | public class LinkedTransferQueueTest ext
460		}
461
462		/**
463	<	* toArray contains all elements
463	>	* toArray() contains all elements in FIFO order
464		*/
465	<	public void testToArray() throws InterruptedException {
465	>	public void testToArray() {
466		LinkedTransferQueue q = populatedQueue(SIZE);
467		Object[] o = q.toArray();
468		for (int i = 0; i < o.length; i++) {
469	<	assertEquals(o[i], q.take());
469	>	assertSame(o[i], q.poll());
470		}
471		}
472
473		/**
474	<	* toArray(a) contains all elements
474	>	* toArray(a) contains all elements in FIFO order
475		*/
476	<	public void testToArray2() throws InterruptedException {
476	>	public void testToArray2() {
477		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
478		Integer[] ints = new Integer[SIZE];
479	<	ints = q.toArray(ints);
479	>	Integer[] array = q.toArray(ints);
480	>	assertSame(ints, array);
481		for (int i = 0; i < ints.length; i++) {
482	<	assertEquals(ints[i], q.take());
482	>	assertSame(ints[i], q.poll());
483		}
484		}
485
486		/**
487	<	* toArray(null) throws NullPointerException
528	<	*/
529	<	public void testToArray_BadArg() {
530	<	try {
531	<	LinkedTransferQueue q = populatedQueue(SIZE);
532	<	Object o[] = q.toArray(null);
533	<	shouldThrow();
534	<	} catch (NullPointerException success) {
535	<	}
536	<	}
537	<
538	<	/**
539	<	* toArray with incompatible array type throws CCE
487	>	* toArray(incompatible array type) throws ArrayStoreException
488		*/
489		public void testToArray1_BadArg() {
490	+	LinkedTransferQueue q = populatedQueue(SIZE);
491		try {
492	<	LinkedTransferQueue q = populatedQueue(SIZE);
544	<	Object o[] = q.toArray(new String[10]);
492	>	q.toArray(new String[10]);
493		shouldThrow();
494	<	} catch (ArrayStoreException success) {
547	<	}
494	>	} catch (ArrayStoreException success) {}
495		}
496
497		/**
#	Line 553 | Line 500 | public class LinkedTransferQueueTest ext
500		public void testIterator() throws InterruptedException {
501		LinkedTransferQueue q = populatedQueue(SIZE);
502		Iterator it = q.iterator();
503	<	while (it.hasNext()) {
503	>	int i;
504	>	for (i = 0; it.hasNext(); i++)
505	>	assertTrue(q.contains(it.next()));
506	>	assertEquals(i, SIZE);
507	>	assertIteratorExhausted(it);
508	>
509	>	it = q.iterator();
510	>	for (i = 0; it.hasNext(); i++)
511		assertEquals(it.next(), q.take());
512	<	}
512	>	assertEquals(i, SIZE);
513	>	assertIteratorExhausted(it);
514		}
515
516		/**
517	<	* iterator.remove removes current element
517	>	* iterator of empty collection has no elements
518	>	*/
519	>	public void testEmptyIterator() {
520	>	assertIteratorExhausted(new LinkedTransferQueue().iterator());
521	>	}
522	>
523	>	/**
524	>	* iterator.remove() removes current element
525		*/
526		public void testIteratorRemove() {
527		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 572 | Line 534 | public class LinkedTransferQueueTest ext
534		it.remove();
535
536		it = q.iterator();
537	<	assertEquals(it.next(), one);
538	<	assertEquals(it.next(), three);
537	>	assertSame(it.next(), one);
538	>	assertSame(it.next(), three);
539		assertFalse(it.hasNext());
540		}
541
#	Line 581 | Line 543 | public class LinkedTransferQueueTest ext
543		* iterator ordering is FIFO
544		*/
545		public void testIteratorOrdering() {
546	<	final LinkedTransferQueue<Integer> q
585	<	= new LinkedTransferQueue<Integer>();
546	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
547		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
548		q.add(one);
549		q.add(two);
#	Line 617 | Line 578 | public class LinkedTransferQueueTest ext
578		LinkedTransferQueue q = populatedQueue(SIZE);
579		String s = q.toString();
580		for (int i = 0; i < SIZE; ++i) {
581	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
581	>	assertTrue(s.contains(String.valueOf(i)));
582		}
583		}
584
#	Line 626 | Line 587 | public class LinkedTransferQueueTest ext
587		*/
588		public void testOfferInExecutor() {
589		final LinkedTransferQueue q = new LinkedTransferQueue();
590	<	q.add(one);
591	<	q.add(two);
592	<	ExecutorService executor = Executors.newFixedThreadPool(2);
590	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
591	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
592	>	try (PoolCleaner cleaner = cleaner(executor)) {
593
594	<	executor.execute(new CheckedRunnable() {
595	<	void realRun() {
596	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
597	<	MILLISECONDS));
598	<	}});
594	>	executor.execute(new CheckedRunnable() {
595	>	public void realRun() throws InterruptedException {
596	>	threadsStarted.await();
597	>	long startTime = System.nanoTime();
598	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
599	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
600	>	}});
601
602	<	executor.execute(new CheckedRunnable() {
603	<	void realRun() throws InterruptedException {
604	<	Thread.sleep(SMALL_DELAY_MS);
605	<	threadAssertEquals(one, q.take());
606	<	}});
607	<
608	<	joinPool(executor);
602	>	executor.execute(new CheckedRunnable() {
603	>	public void realRun() throws InterruptedException {
604	>	threadsStarted.await();
605	>	assertSame(one, q.take());
606	>	checkEmpty(q);
607	>	}});
608	>	}
609		}
610
611		/**
612	<	* poll retrieves elements across Executor threads
612	>	* timed poll retrieves elements across Executor threads
613		*/
614		public void testPollInExecutor() {
615		final LinkedTransferQueue q = new LinkedTransferQueue();
616	<	ExecutorService executor = Executors.newFixedThreadPool(2);
617	<
618	<	executor.execute(new CheckedRunnable() {
619	<	void realRun() throws InterruptedException {
620	<	threadAssertNull(q.poll());
621	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
622	<	MILLISECONDS));
623	<	threadAssertTrue(q.isEmpty());
624	<	}});
625	<
626	<	executor.execute(new CheckedRunnable() {
627	<	void realRun() throws InterruptedException {
628	<	Thread.sleep(SMALL_DELAY_MS);
629	<	q.put(one);
630	<	}});
631	<
632	<	joinPool(executor);
616	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
617	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
618	>	try (PoolCleaner cleaner = cleaner(executor)) {
619	>
620	>	executor.execute(new CheckedRunnable() {
621	>	public void realRun() throws InterruptedException {
622	>	assertNull(q.poll());
623	>	threadsStarted.await();
624	>	long startTime = System.nanoTime();
625	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
626	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
627	>	checkEmpty(q);
628	>	}});
629	>
630	>	executor.execute(new CheckedRunnable() {
631	>	public void realRun() throws InterruptedException {
632	>	threadsStarted.await();
633	>	q.put(one);
634	>	}});
635	>	}
636		}
637
638		/**
639		* A deserialized serialized queue has same elements in same order
640		*/
641		public void testSerialization() throws Exception {
642	<	LinkedTransferQueue q = populatedQueue(SIZE);
643	<
678	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
679	<	ObjectOutputStream out
680	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
681	<	out.writeObject(q);
682	<	out.close();
683	<
684	<	ByteArrayInputStream bin
685	<	= new ByteArrayInputStream(bout.toByteArray());
686	<	ObjectInputStream in
687	<	= new ObjectInputStream(new BufferedInputStream(bin));
688	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
689	<
690	<	assertEquals(q.size(), r.size());
691	<	while (!q.isEmpty()) {
692	<	assertEquals(q.remove(), r.remove());
693	<	}
694	<	}
695	<
696	<	/**
697	<	* drainTo(null) throws NullPointerException
698	<	*/
699	<	public void testDrainToNull() {
700	<	LinkedTransferQueue q = populatedQueue(SIZE);
701	<	try {
702	<	q.drainTo(null);
703	<	shouldThrow();
704	<	} catch (NullPointerException success) {
705	<	}
706	<	}
642	>	Queue x = populatedQueue(SIZE);
643	>	Queue y = serialClone(x);
644
645	<	/**
646	<	* drainTo(this) throws IllegalArgumentException
647	<	*/
648	<	public void testDrainToSelf() {
649	<	LinkedTransferQueue q = populatedQueue(SIZE);
650	<	try {
651	<	q.drainTo(q);
715	<	shouldThrow();
716	<	} catch (IllegalArgumentException success) {
645	>	assertNotSame(y, x);
646	>	assertEquals(x.size(), y.size());
647	>	assertEquals(x.toString(), y.toString());
648	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
649	>	while (!x.isEmpty()) {
650	>	assertFalse(y.isEmpty());
651	>	assertEquals(x.remove(), y.remove());
652		}
653	+	assertTrue(y.isEmpty());
654		}
655
656		/**
#	Line 724 | Line 660 | public class LinkedTransferQueueTest ext
660		LinkedTransferQueue q = populatedQueue(SIZE);
661		ArrayList l = new ArrayList();
662		q.drainTo(l);
663	<	assertEquals(q.size(), 0);
664	<	assertEquals(l.size(), SIZE);
663	>	assertEquals(0, q.size());
664	>	assertEquals(SIZE, l.size());
665		for (int i = 0; i < SIZE; ++i) {
666	<	assertEquals(l.get(i), i);
666	>	assertEquals(i, l.get(i));
667		}
668		q.add(zero);
669		q.add(one);
#	Line 736 | Line 672 | public class LinkedTransferQueueTest ext
672		assertTrue(q.contains(one));
673		l.clear();
674		q.drainTo(l);
675	<	assertEquals(q.size(), 0);
676	<	assertEquals(l.size(), 2);
675	>	assertEquals(0, q.size());
676	>	assertEquals(2, l.size());
677		for (int i = 0; i < 2; ++i) {
678	<	assertEquals(l.get(i), i);
678	>	assertEquals(i, l.get(i));
679		}
680		}
681
682		/**
683	<	* drainTo empties full queue, unblocking a waiting put.
683	>	* drainTo(c) empties full queue, unblocking a waiting put.
684		*/
685		public void testDrainToWithActivePut() throws InterruptedException {
686		final LinkedTransferQueue q = populatedQueue(SIZE);
687	<	Thread t = new Thread(new CheckedRunnable() {
688	<	void realRun() {
687	>	Thread t = newStartedThread(new CheckedRunnable() {
688	>	public void realRun() {
689		q.put(SIZE + 1);
690		}});
755	–	t.start();
691		ArrayList l = new ArrayList();
692		q.drainTo(l);
693		assertTrue(l.size() >= SIZE);
694	<	for (int i = 0; i < SIZE; ++i) {
695	<	assertEquals(l.get(i), i);
696	<	}
762	<	t.join();
694	>	for (int i = 0; i < SIZE; ++i)
695	>	assertEquals(i, l.get(i));
696	>	awaitTermination(t);
697		assertTrue(q.size() + l.size() >= SIZE);
698		}
699
700		/**
701	<	* drainTo(null, n) throws NullPointerException
768	<	*/
769	<	public void testDrainToNullN() {
770	<	LinkedTransferQueue q = populatedQueue(SIZE);
771	<	try {
772	<	q.drainTo(null, 0);
773	<	shouldThrow();
774	<	} catch (NullPointerException success) {
775	<	}
776	<	}
777	<
778	<	/**
779	<	* drainTo(this, n) throws IllegalArgumentException
780	<	*/
781	<	public void testDrainToSelfN() {
782	<	LinkedTransferQueue q = populatedQueue(SIZE);
783	<	try {
784	<	q.drainTo(q, 0);
785	<	shouldThrow();
786	<	} catch (IllegalArgumentException success) {
787	<	}
788	<	}
789	<
790	<	/**
791	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
701	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
702		*/
703		public void testDrainToN() {
704		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 799 | Line 709 | public class LinkedTransferQueueTest ext
709		ArrayList l = new ArrayList();
710		q.drainTo(l, i);
711		int k = (i < SIZE) ? i : SIZE;
712	<	assertEquals(l.size(), k);
713	<	assertEquals(q.size(), SIZE - k);
714	<	for (int j = 0; j < k; ++j) {
715	<	assertEquals(l.get(j), j);
716	<	}
807	<	while (q.poll() != null)
808	<	;
712	>	assertEquals(k, l.size());
713	>	assertEquals(SIZE - k, q.size());
714	>	for (int j = 0; j < k; ++j)
715	>	assertEquals(j, l.get(j));
716	>	do {} while (q.poll() != null);
717		}
718		}
719
720		/**
721	<	* poll and take decrement the waiting consumer count
721	>	* timed poll() or take() increments the waiting consumer count;
722	>	* offer(e) decrements the waiting consumer count
723		*/
724		public void testWaitingConsumer() throws InterruptedException {
725		final LinkedTransferQueue q = new LinkedTransferQueue();
726	<	final ConsumerObserver waiting = new ConsumerObserver();
727	<	new Thread(new CheckedRunnable() {
728	<	void realRun() {
729	<	threadAssertTrue(q.hasWaitingConsumer());
730	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
731	<	threadAssertTrue(q.offer(new Object()));
732	<	}}).start();
733	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
734	<	assertTrue(q.getWaitingConsumerCount()
735	<	< waiting.getWaitingConsumers());
726	>	assertEquals(0, q.getWaitingConsumerCount());
727	>	assertFalse(q.hasWaitingConsumer());
728	>	final CountDownLatch threadStarted = new CountDownLatch(1);
729	>
730	>	Thread t = newStartedThread(new CheckedRunnable() {
731	>	public void realRun() throws InterruptedException {
732	>	threadStarted.countDown();
733	>	long startTime = System.nanoTime();
734	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
735	>	assertEquals(0, q.getWaitingConsumerCount());
736	>	assertFalse(q.hasWaitingConsumer());
737	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
738	>	}});
739	>
740	>	threadStarted.await();
741	>	Callable<Boolean> oneConsumer
742	>	= new Callable<Boolean>() { public Boolean call() {
743	>	return q.hasWaitingConsumer()
744	>	&& q.getWaitingConsumerCount() == 1; }};
745	>	waitForThreadToEnterWaitState(t, oneConsumer);
746	>
747	>	assertTrue(q.offer(one));
748	>	assertEquals(0, q.getWaitingConsumerCount());
749	>	assertFalse(q.hasWaitingConsumer());
750	>
751	>	awaitTermination(t);
752		}
753
754		/**
#	Line 834 | Line 759 | public class LinkedTransferQueueTest ext
759		LinkedTransferQueue q = new LinkedTransferQueue();
760		q.transfer(null);
761		shouldThrow();
762	<	} catch (NullPointerException ex) {
838	<	}
762	>	} catch (NullPointerException success) {}
763		}
764
765		/**
766		* transfer waits until a poll occurs. The transfered element
767	<	* is returned by this associated poll.
767	>	* is returned by the associated poll.
768		*/
769		public void testTransfer2() throws InterruptedException {
770	<	final LinkedTransferQueue<Integer> q
771	<	= new LinkedTransferQueue<Integer>();
770	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
771	>	final CountDownLatch threadStarted = new CountDownLatch(1);
772
773	<	new Thread(new CheckedRunnable() {
774	<	void realRun() throws InterruptedException {
775	<	q.transfer(SIZE);
776	<	threadAssertTrue(q.isEmpty());
777	<	}}).start();
773	>	Thread t = newStartedThread(new CheckedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	threadStarted.countDown();
776	>	q.transfer(five);
777	>	checkEmpty(q);
778	>	}});
779
780	<	Thread.sleep(SHORT_DELAY_MS);
781	<	assertEquals(1, q.size());
782	<	assertEquals(SIZE, (int) q.poll());
783	<	assertTrue(q.isEmpty());
780	>	threadStarted.await();
781	>	Callable<Boolean> oneElement
782	>	= new Callable<Boolean>() { public Boolean call() {
783	>	return !q.isEmpty() && q.size() == 1; }};
784	>	waitForThreadToEnterWaitState(t, oneElement);
785	>
786	>	assertSame(five, q.poll());
787	>	checkEmpty(q);
788	>	awaitTermination(t);
789		}
790
791		/**
792		* transfer waits until a poll occurs, and then transfers in fifo order
793		*/
794		public void testTransfer3() throws InterruptedException {
795	<	final LinkedTransferQueue<Integer> q
866	<	= new LinkedTransferQueue<Integer>();
795	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
796
797	<	Thread first = new Thread(new CheckedRunnable() {
798	<	void realRun() throws InterruptedException {
799	<	Integer i = SIZE + 1;
800	<	q.transfer(i);
801	<	threadAssertTrue(!q.contains(i));
873	<	threadAssertEquals(1, q.size());
797	>	Thread first = newStartedThread(new CheckedRunnable() {
798	>	public void realRun() throws InterruptedException {
799	>	q.transfer(four);
800	>	assertFalse(q.contains(four));
801	>	assertEquals(1, q.size());
802		}});
875	–	first.start();
803
804	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
805	<	void realRun() throws InterruptedException {
806	<	while (q.size() == 0)
807	<	Thread.yield();
808	<	q.transfer(SIZE);
809	<	}});
810	<	interruptedThread.start();
804	>	Thread interruptedThread = newStartedThread(
805	>	new CheckedInterruptedRunnable() {
806	>	public void realRun() throws InterruptedException {
807	>	while (q.isEmpty())
808	>	Thread.yield();
809	>	q.transfer(five);
810	>	}});
811
812		while (q.size() < 2)
813		Thread.yield();
814		assertEquals(2, q.size());
815	<	assertEquals(SIZE + 1, (int) q.poll());
815	>	assertSame(four, q.poll());
816		first.join();
817		assertEquals(1, q.size());
818		interruptedThread.interrupt();
819		interruptedThread.join();
820	<	assertEquals(0, q.size());
894	<	assertTrue(q.isEmpty());
820	>	checkEmpty(q);
821		}
822
823		/**
#	Line 900 | Line 826 | public class LinkedTransferQueueTest ext
826		*/
827		public void testTransfer4() throws InterruptedException {
828		final LinkedTransferQueue q = new LinkedTransferQueue();
829	<	new Thread(new CheckedRunnable() {
830	<	void realRun() throws InterruptedException {
829	>
830	>	Thread t = newStartedThread(new CheckedRunnable() {
831	>	public void realRun() throws InterruptedException {
832		q.transfer(four);
833	<	threadAssertFalse(q.contains(four));
834	<	threadAssertEquals(three, q.poll());
835	<	}}).start();
836	<	Thread.sleep(MEDIUM_DELAY_MS);
833	>	assertFalse(q.contains(four));
834	>	assertSame(three, q.poll());
835	>	}});
836	>
837	>	while (q.isEmpty())
838	>	Thread.yield();
839	>	assertFalse(q.isEmpty());
840	>	assertEquals(1, q.size());
841		assertTrue(q.offer(three));
842	<	assertEquals(four, q.poll());
842	>	assertSame(four, q.poll());
843	>	awaitTermination(t);
844		}
845
846		/**
847		* transfer waits until a take occurs. The transfered element
848	<	* is returned by this associated take.
848	>	* is returned by the associated take.
849		*/
850		public void testTransfer5() throws InterruptedException {
851	<	final LinkedTransferQueue<Integer> q
920	<	= new LinkedTransferQueue<Integer>();
851	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
852
853	<	new Thread(new CheckedRunnable() {
854	<	void realRun() throws InterruptedException {
855	<	q.transfer(SIZE);
856	<	threadAssertTrue(q.isEmpty());
857	<	}}).start();
853	>	Thread t = newStartedThread(new CheckedRunnable() {
854	>	public void realRun() throws InterruptedException {
855	>	q.transfer(four);
856	>	checkEmpty(q);
857	>	}});
858
859	<	Thread.sleep(SHORT_DELAY_MS);
860	<	assertEquals(SIZE, (int) q.take());
861	<	assertTrue(q.isEmpty());
859	>	while (q.isEmpty())
860	>	Thread.yield();
861	>	assertFalse(q.isEmpty());
862	>	assertEquals(1, q.size());
863	>	assertSame(four, q.take());
864	>	checkEmpty(q);
865	>	awaitTermination(t);
866		}
867
868		/**
869		* tryTransfer(null) throws NullPointerException
870		*/
871		public void testTryTransfer1() {
872	+	final LinkedTransferQueue q = new LinkedTransferQueue();
873		try {
938	–	final LinkedTransferQueue q = new LinkedTransferQueue();
874		q.tryTransfer(null);
875		shouldThrow();
876	<	} catch (NullPointerException ex) {
942	<	}
876	>	} catch (NullPointerException success) {}
877		}
878
879		/**
880		* tryTransfer returns false and does not enqueue if there are no
881		* consumers waiting to poll or take.
882		*/
883	<	public void testTryTransfer2() {
883	>	public void testTryTransfer2() throws InterruptedException {
884		final LinkedTransferQueue q = new LinkedTransferQueue();
885		assertFalse(q.tryTransfer(new Object()));
886		assertFalse(q.hasWaitingConsumer());
887	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
887	>	checkEmpty(q);
888		}
889
890		/**
#	Line 961 | Line 894 | public class LinkedTransferQueueTest ext
894		public void testTryTransfer3() throws InterruptedException {
895		final Object hotPotato = new Object();
896		final LinkedTransferQueue q = new LinkedTransferQueue();
897	<	new Thread(new CheckedRunnable() {
898	<	void realRun() {
897	>
898	>	Thread t = newStartedThread(new CheckedRunnable() {
899	>	public void realRun() {
900		while (! q.hasWaitingConsumer())
901		Thread.yield();
902	<	threadAssertTrue(q.hasWaitingConsumer());
903	<	threadAssertTrue(q.isEmpty());
904	<	threadAssertTrue(q.size() == 0);
905	<	threadAssertTrue(q.tryTransfer(hotPotato));
906	<	}}).start();
907	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
908	<	assertTrue(q.isEmpty());
902	>	assertTrue(q.hasWaitingConsumer());
903	>	checkEmpty(q);
904	>	assertTrue(q.tryTransfer(hotPotato));
905	>	}});
906	>
907	>	long startTime = System.nanoTime();
908	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
909	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
910	>	checkEmpty(q);
911	>	awaitTermination(t);
912		}
913
914		/**
#	Line 981 | Line 918 | public class LinkedTransferQueueTest ext
918		public void testTryTransfer4() throws InterruptedException {
919		final Object hotPotato = new Object();
920		final LinkedTransferQueue q = new LinkedTransferQueue();
921	<	new Thread(new CheckedRunnable() {
922	<	void realRun() {
921	>
922	>	Thread t = newStartedThread(new CheckedRunnable() {
923	>	public void realRun() {
924		while (! q.hasWaitingConsumer())
925		Thread.yield();
926	<	threadAssertTrue(q.hasWaitingConsumer());
927	<	threadAssertTrue(q.isEmpty());
928	<	threadAssertTrue(q.size() == 0);
929	<	threadAssertTrue(q.tryTransfer(hotPotato));
930	<	}}).start();
931	<	assertTrue(q.take() == hotPotato);
932	<	assertTrue(q.isEmpty());
926	>	assertTrue(q.hasWaitingConsumer());
927	>	checkEmpty(q);
928	>	assertTrue(q.tryTransfer(hotPotato));
929	>	}});
930	>
931	>	assertSame(q.take(), hotPotato);
932	>	checkEmpty(q);
933	>	awaitTermination(t);
934		}
935
936		/**
937	<	* tryTransfer waits the amount given if interrupted, and
999	<	* throws interrupted exception
937	>	* tryTransfer blocks interruptibly if no takers
938		*/
939		public void testTryTransfer5() throws InterruptedException {
940		final LinkedTransferQueue q = new LinkedTransferQueue();
941	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
942	<	void realRun() throws InterruptedException {
943	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
941	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
942	>	assertTrue(q.isEmpty());
943	>
944	>	Thread t = newStartedThread(new CheckedRunnable() {
945	>	public void realRun() throws InterruptedException {
946	>	long startTime = System.nanoTime();
947	>	Thread.currentThread().interrupt();
948	>	try {
949	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
950	>	shouldThrow();
951	>	} catch (InterruptedException success) {}
952	>	assertFalse(Thread.interrupted());
953	>
954	>	pleaseInterrupt.countDown();
955	>	try {
956	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
957	>	shouldThrow();
958	>	} catch (InterruptedException success) {}
959	>	assertFalse(Thread.interrupted());
960	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
961		}});
962	<	toInterrupt.start();
963	<	Thread.sleep(SMALL_DELAY_MS);
964	<	toInterrupt.interrupt();
962	>
963	>	await(pleaseInterrupt);
964	>	assertThreadStaysAlive(t);
965	>	t.interrupt();
966	>	awaitTermination(t);
967	>	checkEmpty(q);
968		}
969
970		/**
971	<	* tryTransfer gives up after the timeout and return false
971	>	* tryTransfer gives up after the timeout and returns false
972		*/
973		public void testTryTransfer6() throws InterruptedException {
974		final LinkedTransferQueue q = new LinkedTransferQueue();
975	<	new Thread(new CheckedRunnable() {
976	<	void realRun() throws InterruptedException {
977	<	threadAssertFalse
978	<	(q.tryTransfer(new Object(),
979	<	SHORT_DELAY_MS, MILLISECONDS));
980	<	}}).start();
981	<	Thread.sleep(LONG_DELAY_MS);
982	<	assertTrue(q.isEmpty());
975	>
976	>	Thread t = newStartedThread(new CheckedRunnable() {
977	>	public void realRun() throws InterruptedException {
978	>	long startTime = System.nanoTime();
979	>	assertFalse(q.tryTransfer(new Object(),
980	>	timeoutMillis(), MILLISECONDS));
981	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
982	>	checkEmpty(q);
983	>	}});
984	>
985	>	awaitTermination(t);
986	>	checkEmpty(q);
987		}
988
989		/**
#	Line 1031 | Line 993 | public class LinkedTransferQueueTest ext
993		public void testTryTransfer7() throws InterruptedException {
994		final LinkedTransferQueue q = new LinkedTransferQueue();
995		assertTrue(q.offer(four));
996	<	new Thread(new CheckedRunnable() {
997	<	void realRun() throws InterruptedException {
998	<	threadAssertTrue(q.tryTransfer(five,
999	<	LONG_DELAY_MS, MILLISECONDS));
1000	<	threadAssertTrue(q.isEmpty());
1001	<	}}).start();
1002	<	Thread.sleep(SHORT_DELAY_MS);
996	>
997	>	Thread t = newStartedThread(new CheckedRunnable() {
998	>	public void realRun() throws InterruptedException {
999	>	long startTime = System.nanoTime();
1000	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1001	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1002	>	checkEmpty(q);
1003	>	}});
1004	>
1005	>	while (q.size() != 2)
1006	>	Thread.yield();
1007		assertEquals(2, q.size());
1008	<	assertEquals(four, q.poll());
1009	<	assertEquals(five, q.poll());
1010	<	assertTrue(q.isEmpty());
1008	>	assertSame(four, q.poll());
1009	>	assertSame(five, q.poll());
1010	>	checkEmpty(q);
1011	>	awaitTermination(t);
1012		}
1013
1014		/**
1015	<	* tryTransfer attempts to enqueue into the q and fails returning
1016	<	* false not enqueueing and the successive poll is null
1015	>	* tryTransfer attempts to enqueue into the queue and fails
1016	>	* returning false not enqueueing and the successive poll is null
1017		*/
1018		public void testTryTransfer8() throws InterruptedException {
1019		final LinkedTransferQueue q = new LinkedTransferQueue();
1020		assertTrue(q.offer(four));
1021		assertEquals(1, q.size());
1022	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1022	>	long startTime = System.nanoTime();
1023	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1024	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1025		assertEquals(1, q.size());
1026	<	assertEquals(four, q.poll());
1058	<	threadAssertTrue(q.isEmpty());
1026	>	assertSame(four, q.poll());
1027		assertNull(q.poll());
1028	+	checkEmpty(q);
1029		}
1030
1031		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1032	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1033	<	assertTrue(q.isEmpty());
1032	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1033	>	checkEmpty(q);
1034		for (int i = 0; i < n; i++) {
1035		assertEquals(i, q.size());
1036		assertTrue(q.offer(i));
#	Line 1071 | Line 1040 | public class LinkedTransferQueueTest ext
1040		return q;
1041		}
1042
1043	<	private static class ConsumerObserver {
1044	<
1045	<	private int waitingConsumers;
1046	<
1047	<	private ConsumerObserver() {
1048	<	}
1049	<
1050	<	private void setWaitingConsumer(int i) {
1051	<	this.waitingConsumers = i;
1052	<	}
1053	<
1054	<	private int getWaitingConsumers() {
1086	<	return waitingConsumers;
1043	>	/**
1044	>	* remove(null), contains(null) always return false
1045	>	*/
1046	>	public void testNeverContainsNull() {
1047	>	Collection<?>[] qs = {
1048	>	new LinkedTransferQueue<Object>(),
1049	>	populatedQueue(2),
1050	>	};
1051	>
1052	>	for (Collection<?> q : qs) {
1053	>	assertFalse(q.contains(null));
1054	>	assertFalse(q.remove(null));
1055		}
1056		}
1057		}

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